阅读说明：本技术 新型镀银铜芯聚四氟乙烯复合绝缘电线电缆及其成型工艺 (Novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable and forming process thereof ) 是由 盛睿 尤丹 吴本健 胡春宇 王洁然 宫传播 叶道坤 彭海珍 于 2020-11-28 设计创作，主要内容包括：本发明涉及电缆生产加工技术领域,具体为新型镀银铜芯聚四氟乙烯复合绝缘电线电缆及其成型工艺,该电缆包括一个中心独缆和三个周边分缆,三个周边分缆的横截面均呈腰形状结构,三个周边分缆中的聚四氟乙烯复合绝缘层也呈腰形状结构且具有相应的腔室空间,镀银铜芯导线呈圆形状结构,当电线电缆受力发生扭转时,周边分缆中的镀银铜芯导线可在聚四氟乙烯复合绝缘层内自适应地受力滑动,以避免在扭转力作用下发生断裂。本发明通过设置的呈腰形状结构且具有相应的腔室空间的周边分缆,使得电线电缆在经受扭曲时,周边分缆内的镀银铜芯导线能够自适应地在聚四氟乙烯复合绝缘层内滑动,卸去所受的扭转作用力,避免发生断裂,使得电线电缆不易损坏。(The invention relates to the technical field of cable production and processing, in particular to a novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable and a forming process thereof. According to the invention, the peripheral cable-dividing structure which is in a waist-shaped structure and has a corresponding cavity space is arranged, so that when the electric wire and the electric cable are twisted, the silver-plated copper core conducting wire in the peripheral cable-dividing structure can slide in the polytetrafluoroethylene composite insulating layer in a self-adaptive manner, the torsion acting force borne by the silver-plated copper core conducting wire is removed, the breakage is avoided, and the electric wire and the electric cable are not easy to damage.)

1. Novel silver-plated copper core polytetrafluoroethylene composite insulation wire and cable, divide the cable including a center single cable and three periphery, center single cable divides the cable all to include silver-plated copper core wire (1), cladding polytetrafluoroethylene composite insulation layer (2) outside silver-plated copper core wire (1) with the periphery, and wherein, center single cable is still including cladding shielding layer (3) outside polytetrafluoroethylene composite insulation layer (2), fire-retardant underlayer (4), wear-resisting outer (5) in proper order, and periphery divides the cable still including cladding shielding layer (3) outside polytetrafluoroethylene composite insulation layer (2), fire-retardant wear-resisting protective layer (6) in proper order, its characterized in that: the central single-cable outer sleeve is wrapped with a connecting rubber sleeve frame (7) which is used for distributing three peripheral branch cables around the central single cable along the circumferential direction and is connected with the central single cable;

the cross sections of the three peripheral branch cables are of waist-shaped structures, polytetrafluoroethylene composite insulating layers (2) in the three peripheral branch cables are also of waist-shaped structures and have corresponding cavity spaces, and silver-plated copper core wires (1) are of circular structures, so that when the electric wire and cable are stressed to twist, the silver-plated copper core wires (1) in the peripheral branch cables can be stressed to slide in the polytetrafluoroethylene composite insulating layers (2) in a self-adaptive manner, and breakage under the action of twisting force is avoided.

2. The novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable according to claim 1, characterized in that: the connecting rubber sleeve frame (7) is provided with three sub-packaging supports (8) which are distributed circumferentially, and the end part of each sub-packaging support (8) is provided with two sub-packaging side edges (9) which are distributed adjacently and have a certain gap.

3. The novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable according to claim 2, characterized in that: the end part of the sub-packaging side edge (9) is provided with a beveled end part (10) which is beveled inwards.

4. The forming process of the novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable according to any one of claims 1 to 3, characterized in that: the method specifically comprises the following steps:

(A) forming polytetrafluoroethylene outside a silver-plated copper core lead (1) to form a polytetrafluoroethylene composite insulating layer (2), weaving silver-plated copper wires outside the polytetrafluoroethylene composite insulating layer (2) to form a shielding layer (3), weaving flame-retardant fiber wires outside the shielding layer (3) to form a flame-retardant layer (4), and extruding and wrapping high-performance rubber outside the flame-retardant layer (4) to form a wear-resistant outer lining layer (5) to obtain a central single cable;

(B) the rubber sleeve frame (7) is sleeved and connected outside the central single cable, the rubber sleeve frame (7) is separately processed and molded, and the sub-packaging side edges (9) on the three sub-packaging supports (8) are vertical during molding;

(C) the method comprises the steps of injection molding polytetrafluoroethylene into a polytetrafluoroethylene composite insulating layer (2) with a hollow waist-shaped structure, weaving silver-plated copper wires outside the polytetrafluoroethylene composite insulating layer (2) to form a shielding layer (3), extruding and wrapping flame-retardant wear-resistant rubber materials outside the shielding layer (3) to form a flame-retardant wear-resistant protective layer (6), and penetrating silver-plated copper core wires (1) into the polytetrafluoroethylene composite insulating layer (2) to obtain peripheral cables;

(D) placing the central single cable sheathed with the connecting rubber sleeve frame (7) on cable thermoforming equipment, horizontally distributing and fixing the central single cable, connecting two ends of the central single cable with wire feeding mechanisms, enabling three peripheral branch cables to be circumferentially distributed around the central single cable and fixed by a clamp, and simultaneously connecting each peripheral branch cable with the wire feeding mechanism;

(E) after the early-stage fixing preparation work is finished, three groups of thermoforming mechanisms on the cable thermoforming equipment correspondingly move to the corresponding sub-packaging supports (8), heating modules (11) in each group of thermoforming mechanisms are correspondingly inserted into the three sub-packaging supports (8) on the connecting rubber sleeve frame (7) at the same time, and the sub-packaging side edges (9) are heated to the critical point temperature capable of performing thermoplastic forming;

(F) the heated sub-package side edges (9) are molded and pressed along the outline of the peripheral cable-dividing side edges by the two molding modules (12) matched with the side edges of each heating module (11), and the originally vertical sub-package side edges (9) are thermally molded into a bent shape wrapping the peripheral cable-dividing side edges;

(G) and then the wire feeding mechanism is started to realize the molding of the electric wire and the electric cable by matching with the heating module (11) and the molding module (12).

5. The forming process of the novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable according to claim 4, characterized in that: and (E) the heating module (11) is in a long and narrow plate-shaped structure, and the thickness of the heating module is matched with the width of a gap between the two sub-package side edges (9).

6. The forming process of the novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable according to claim 4, characterized in that: and (E) the forming block (12) is a scraper with a semicircular head-shaped structure at the bottom, and the forming block (12) is connected with a mechanical arm (13).

Technical Field

The invention relates to the technical field of cable production and processing, in particular to a novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable and a forming process thereof.

Background

At present, cables used in aircraft and ship computers and instrument instruments have high quality requirements on various aspects of the cables, and generally have the performances of insulation, strong interference resistance, high temperature resistance, oxidation resistance and the like. The cable has the following defects: the cable does not have strong torsion resistance, and when the cable is subjected to bending and twisting for a long time in the long-term use process, the cable is easy to break, so that the cable is damaged.

Disclosure of Invention

In order to solve the technical problems, the invention provides a novel silver-plated copper core polytetrafluoroethylene composite insulated wire and cable and a forming process thereof.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the novel silver-plated copper core polytetrafluoroethylene composite insulated wire cable comprises a central single cable and three peripheral branch cables, wherein the central single cable and the peripheral branch cables respectively comprise silver-plated copper core wires and polytetrafluoroethylene composite insulating layers coated outside the silver-plated copper core wires, the central single cable further comprises a shielding layer, a flame-retardant layer and a wear-resistant outer lining layer which are sequentially coated outside the polytetrafluoroethylene composite insulating layers, the peripheral branch cables further comprise a shielding layer and a flame-retardant wear-resistant protective layer which are sequentially coated outside the polytetrafluoroethylene composite insulating layers, and a connecting rubber sleeve frame which is used for distributing the three peripheral branch cables around the central single cable along the circumferential direction and is connected with the central single cable is coated outside the central single cable;

the cross sections of the three peripheral branch cables are of waist-shaped structures, polytetrafluoroethylene composite insulating layers in the three peripheral branch cables are also of waist-shaped structures and have corresponding cavity spaces, and the silver-plated copper core wires are of circular structures.

Furthermore, the connecting rubber sleeve frame is provided with three sub-packaging supports which are distributed circumferentially, and the end part of each sub-packaging support is provided with two sub-packaging side edges which are distributed adjacently and have a certain gap.

Further, the end part of the sub-packaging side edge is provided with a beveled end part which is beveled inwards.

A novel forming process of silver-plated copper core polytetrafluoroethylene composite insulated wires and cables specifically comprises the following steps:

(A) forming polytetrafluoroethylene outside the silver-plated copper core lead to form a polytetrafluoroethylene composite insulating layer, weaving silver-plated copper wires outside the polytetrafluoroethylene composite insulating layer to form a shielding layer, weaving flame-retardant fiber wires outside the shielding layer to form a flame-retardant layer, and extruding high-performance rubber outside the flame-retardant layer to form a wear-resistant outer lining layer to obtain a central single cable;

(B) the rubber sleeve frame is sleeved and connected outside the central single cable, the rubber sleeve frame is connected and processed and formed independently, and the subpackage side edges of the three subpackage supports are vertical during forming;

(C) the method comprises the following steps of (1) injection molding polytetrafluoroethylene into a polytetrafluoroethylene composite insulating layer with a hollow waist-shaped structure inside, weaving silver-plated copper wires outside the polytetrafluoroethylene composite insulating layer to form a shielding layer, extruding flame-retardant wear-resistant rubber materials outside the shielding layer to form a flame-retardant wear-resistant protective layer, and penetrating silver-plated copper core wires into the polytetrafluoroethylene composite insulating layer to obtain peripheral branch cables;

(D) placing the central single cable sheathed with the connecting rubber sleeve frame on cable thermal forming equipment, horizontally distributing and fixing the central single cable, connecting two ends of the central single cable with wire feeding mechanisms, enabling three peripheral branch cables to be distributed around the central single cable in a circumferential manner and fixed by a clamp, and simultaneously connecting each peripheral branch cable with the wire feeding mechanism;

(E) after the early-stage fixing preparation work is finished, three groups of thermoforming mechanisms on the cable thermoforming equipment correspondingly move to corresponding sub-packaging supports, heating modules in each group of thermoforming mechanisms are correspondingly inserted into three sub-packaging supports on a connecting rubber sleeve frame at the same time, and the side edges of the sub-packaging mechanisms are heated to the critical point temperature capable of performing thermoplastic forming;

(F) the heated sub-package side edges of the two molding modules matched with the side edges of each heating module are molded and pressed along the outline of the side edges of the peripheral sub-cables, and the originally vertical sub-package side edges are thermally molded into a bent shape wrapping the side edges of the peripheral sub-cables;

(G) and then the wire feeding mechanism is started to realize the molding of the electric wire and the electric cable by matching with the heating module and the molding module.

Further, the heating module in the step (E) is a long and narrow plate-shaped structure, and the thickness of the heating module is matched with the width of the gap between the two sub-package side edges.

Further, the forming block in the step (E) is a scraper with a bottom in a semicircular head structure, and the forming block is connected with a mechanical arm.

The invention has the beneficial effects that:

compared with the prior art, the invention has the advantages that the peripheral branch cables which are in a waist-shaped structure and have corresponding cavity spaces are arranged, and the three peripheral branch cables are connected with the central single cable through the arranged connecting rubber sleeve frame to form the electric wire cable, so that when the electric wire cable is twisted, silver-plated copper core wires in the peripheral branch cables can slide in the polytetrafluoroethylene composite insulating layer in a self-adaptive manner, the twisting acting force is removed, the breakage is avoided, the electric wire cable is not easy to damage, and the torsion resistance of the electric wire cable is greatly enhanced.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic view of a wire cable according to the present invention;

FIG. 2 is a schematic structural view of a connecting rubber sleeve frame according to the present invention;

FIG. 3 is a schematic diagram of a thermoforming mechanism of the present invention in one of three sets.

In the figure: 1. silver-plated copper core wires; 2. a polytetrafluoroethylene composite insulating layer; 3. a shielding layer; 4. a flame retardant layer; 5. a wear-resistant outer lining layer; 6. a flame-retardant wear-resistant protective layer; 7. connecting a rubber sleeve frame; 8. subpackaging a bracket; 9. subpackaging the sides; 10. a chamfered end portion; 11. a heating module; 12. forming a block; 13. a robotic arm.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.

As shown in fig. 1 to 3, the novel silver-plated copper core polytetrafluoroethylene composite insulated wire cable comprises a central single cable and three peripheral branch cables, wherein the central single cable and the peripheral branch cables respectively comprise a silver-plated copper core wire 1 and a polytetrafluoroethylene composite insulating layer 2 coated outside the silver-plated copper core wire 1, the central single cable further comprises a shielding layer 3, a flame-retardant layer 4 and a wear-resistant outer lining layer 5 which are sequentially coated outside the polytetrafluoroethylene composite insulating layer 2, the peripheral branch cables further comprise a shielding layer 3 and a flame-retardant wear-resistant protective layer 6 which are sequentially coated outside the polytetrafluoroethylene composite insulating layer 2, and a connecting rubber sleeve frame 7 which is used for connecting the central single cable with the central single cable and distributes the three peripheral branch cables around the central single cable along the circumferential direction is sheathed outside the central single cable;

the cross sections of the three peripheral branch cables are of waist-shaped structures, the polytetrafluoroethylene composite insulating layers 2 in the three peripheral branch cables are also of waist-shaped structures and have corresponding cavity spaces, the silver-plated copper core wires 1 are of circular structures, and when the electric wire and the electric cable are stressed and twisted, the silver-plated copper core wires 1 in the peripheral branch cables can be stressed and slide in the polytetrafluoroethylene composite insulating layers 2 in a self-adaptive mode, the twisting acting force borne by the silver-plated copper core wires is removed, and therefore the situation that the silver-plated copper core wires are broken under the action of the twisting force is avoided.

As a further improvement of the invention, the connecting rubber sleeve frame 7 is provided with three sub-packaging supports 8 which are distributed in a circumferential manner, and the end part of each sub-packaging support 8 is provided with two sub-packaging side edges 9 which are distributed adjacently and have a certain gap.

As a further development of the invention, the ends of the partial package sides 9 are provided with beveled ends 10 which are beveled inwards.

Each sub-packaging support 8 is correspondingly provided with two sub-packaging side edges 9, as shown in fig. 2, which is a schematic structural diagram of the connecting rubber sleeve frame 7 before being thermoformed. The sub-package side 9 has the function that under the action of the cable thermal forming equipment, the side edge of the peripheral sub-cable can be bent and coated and matched with the sub-package side 9 on the other side of the peripheral sub-cable, so that the peripheral sub-cable and the central single cable are fixedly connected together.

The beveled ends 10 at the ends of the partial package sides 9 have the effect of facilitating the bending mechanism in the cable thermoforming system to be able to extend from the outside into the gap between the two partial package sides 9, spreading the two partial package sides 9 apart in opposite directions.

A novel forming process of silver-plated copper core polytetrafluoroethylene composite insulated wires and cables specifically comprises the following steps:

(A) the manufacturing method comprises the steps of forming polytetrafluoroethylene outside a silver-plated copper core wire 1 to form a polytetrafluoroethylene composite insulating layer 2, weaving silver-plated copper wires outside the polytetrafluoroethylene composite insulating layer 2 to form a shielding layer 3, weaving flame-retardant fiber wires outside the shielding layer 3 to form a flame-retardant layer 4, and extruding high-performance rubber outside the flame-retardant layer 4 to form a wear-resistant outer lining layer 5 to obtain the central single cable.

(B) The rubber sleeve frame 7 is connected to the outside cover package of single cable in center, connects rubber sleeve frame 7 and processes the shaping alone, and the branch on the three branch package support 8 during the shaping 9 all is vertical form.

(C) The polytetrafluoroethylene composite insulation layer 2 of the waist-shaped dress structure of inside hollow is moulded plastics with polytetrafluoroethylene, will be plated with silver copper wire weave in polytetrafluoroethylene composite insulation layer 2 outside and form shielding layer 3, will fire-retardant wear-resisting rubber material crowded package forms fire-retardant wear-resisting protective layer 6 in shielding layer 3 outside, will be plated with silver copper core wire 1 and penetrate in order to obtain peripheral branch cable in polytetrafluoroethylene composite insulation layer 2.

(D) The central single cable covered with the connecting rubber sleeve frame 7 is placed on the cable thermal forming equipment and is horizontally distributed and fixed, meanwhile, two ends of the central single cable are connected with the wire feeding mechanism, three peripheral branch cables are circumferentially distributed around the central single cable and are fixed through the clamp, and meanwhile, each peripheral branch cable is also connected with the wire feeding mechanism.

(E) After the previous fixing preparation work is finished, three groups of thermoforming mechanisms on the cable thermoforming equipment correspondingly move to the corresponding sub-packaging supports 8, heating modules 11 in each group of thermoforming mechanisms are correspondingly inserted into the three sub-packaging supports 8 on the connecting rubber sleeve frame 7 at the same time, and the sub-packaging side edges 9 are heated to the critical point temperature capable of performing thermoplastic forming.

Specifically, the heating module 11 is a long and narrow plate-shaped structure, and the thickness of the heating module is matched with the width of a gap between two sub-package side edges 9; the forming block 12 is connected with a mechanical arm 13. The mechanical arm 13 is a two-axis mechanical arm, and can realize vertical lifting and horizontal movement of the forming block 12, so that the forming block 12 can support the heated sub-packaging side 9 to press and coat the side of the peripheral sub-cable.

(F) The subcontracting side 9 after every heating module 11 side two forming module 12 that match will heat, the outline that divides the cable side along the periphery is moulded and is pressed, and the subcontracting side 9 thermoforming of vertical form originally becomes the curved form of parcel peripheral branch cable side.

(G) And then the wire feeding mechanism is started to realize the molding of the electric wire and the electric cable by matching with the heating module 11 and the molding module 12.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.